Commit 18e46e11 authored by Suzuki K Poulose's avatar Suzuki K Poulose Committed by Greg Kroah-Hartman
Browse files

coresight: stm: Rearrange probing the stimulus area 



As we are about to refactor the platform specific handling
re-arrange some of the DT specific property handling.

Signed-off-by: default avatarSuzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6e9ad805

drivers/hwtracing/coresight/coresight-stm.c

+19 −4
Original line number Diff line number Diff line
@@ -683,14 +683,15 @@ static const struct attribute_group *coresight_stm_groups[] = { 
	NULL,

};



static int stm_get_resource_byname(struct device_node *np,

				   char *ch_base, struct resource *res)

#ifdef CONFIG_OF

static int of_stm_get_stimulus_area(struct device *dev, struct resource *res)

{

	const char *name = NULL;

	int index = 0, found = 0;

	struct device_node *np = dev->of_node;



	while (!of_property_read_string_index(np, "reg-names", index, &name)) {

		if (strcmp(ch_base, name)) {

		if (strcmp("stm-stimulus-base", name)) {

			index++;

			continue;

		}
@@ -705,6 +706,20 @@ static int stm_get_resource_byname(struct device_node *np, 


	return of_address_to_resource(np, index, res);

}

#else

static inline int of_stm_get_stimulus_area(struct device *dev,

					   struct resource *res)

{

	return -ENOENT;

}

#endif



static int stm_get_stimulus_area(struct device *dev, struct resource *res)

{

	if (is_of_node(dev_fwnode(dev)))

		return of_stm_get_stimulus_area(dev, res);

	return -ENOENT;

}



static u32 stm_fundamental_data_size(struct stm_drvdata *drvdata)

{
@@ -819,7 +834,7 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) 
		return PTR_ERR(base);

	drvdata->base = base;



	ret = stm_get_resource_byname(np, "stm-stimulus-base", &ch_res);

	ret = stm_get_stimulus_area(dev, &ch_res);

	if (ret)

		return ret;

	drvdata->chs.phys = ch_res.start;

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